A. an acid
B. a dehydrating agent
C. an oxidizing agent
D. as sulphonating agent
Group VA and VIA Elements
Which of the following is different with respect to physical appearance ?
A. Arsenic
B. Phosphorus
C. Antimony
D. Bismuth
FeSO4 forms brown ring with________________?
A. N2O3
B. NO2
C. NO
D. N2O
Which one of the following compounds usually smells like garlic ?
A. P2O3
B. P2O5
C. H3PO3
D. All have same smell
The gas which cannot be dried by conc. H2SO4 ?
A. SO2
B. H2S
C. CO2
D. C2H4
Which one of the followings possesses melting point below 0°C?
A. Nitrogen
B. Phosphorus
C. Carbon
D. Bismuth
P2O5 is a hygroscopic powder which sublimes at______________?
A. 260°C
B. 360°C
C. 630°C
D. 620°C
Oxygen and sulphur resemble in all except________________?
A. Electronic conviguration of valence shell electrons
B. Show allotropy
C. Polymeric
D. Show same oxidation state
Phosphoric acid is a weak acid and its basicity is____________________?
A. 1
B. 3
C. zero
D. 2
Which allotropic form of phosphorous is the most stable ?
A. White
B. black
C. red
D. Violet
